GB2558958A - Improvements in or relating to solar shading - Google Patents

Improvements in or relating to solar shading Download PDF

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Publication number
GB2558958A
GB2558958A GB1701210.5A GB201701210A GB2558958A GB 2558958 A GB2558958 A GB 2558958A GB 201701210 A GB201701210 A GB 201701210A GB 2558958 A GB2558958 A GB 2558958A
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Prior art keywords
bracket
mounting
exterior
solar
thermal
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GB201701210D0 (en
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Braybrook Peter
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Braybrook Peter
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Priority to GB1701210.5A priority Critical patent/GB2558958A/en
Publication of GB201701210D0 publication Critical patent/GB201701210D0/en
Publication of GB2558958A publication Critical patent/GB2558958A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/88Curtain walls
    • E04B2/96Curtain walls comprising panels attached to the structure through mullions or transoms
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/08Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of a plurality of similar rigid parts, e.g. slabs, lamellae
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds

Abstract

The bracket mounting device 10 comprises a fibre-reinforced plastics mounting body 22, 24 for forming a thermal break to inhibit thermal conduction between an exterior solar shading structure and a building element, such as a mullion of a curtain wall, to which it is attached, a plurality of mullion-engagement apertures 14 extending through the mounting body for receiving fixings, such as mullion fasteners 26, a plurality of bracket-plate apertures 16 extending through the mounting body transversely of the mullion-engagement apertures 14 and spaced therefrom to maintain the thermal break, a pair of opposing bracket-engagement plates 18 attachable to the mounting body via the bracket-plate apertures, each bracket-engagement plate having at least one bracket-engagement aperture 20 for engaging an exterior-solar-shading bracket mounting member 36. The bracket may also include an insulating sheath 40 or packers (140, Fig. 4). Also claimed is a bracket having a mounting body integrally formed with a solar-shading bracket receiver (see Fig. 8).

Description

(54) Title of the Invention: Improvements in or relating to solar shading
Abstract Title: Thermal break bracket mounting device for solar shading (57) The bracket mounting device 10 comprises a fibre-reinforced plastics mounting body 22, 24 for forming a thermal break to inhibit thermal conduction between an exterior solar shading structure and a building element, such as a mullion of a curtain wall, to which it is attached, a plurality of mullion-engagement apertures 14 extending through the mounting body for receiving fixings, such as mullion fasteners 26, a plurality of bracket-plate apertures 16 extending through the mounting body transversely of the mullion-engagement apertures 14 and spaced therefrom to maintain the thermal break, a pair of opposing bracket-engagement plates 18 attachable to the mounting body via the bracket-plate apertures, each bracket-engagement plate having at least one bracket-engagement aperture 20 for engaging an exterior-solar-shading bracket mounting member 36. The bracket may also include an insulating sheath 40 or packers (140, Fig. 4). Also claimed is a bracket having a mounting body integrally formed with a solarshading bracket receiver (see Fig. 8).
Figure GB2558958A_D0001
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Figure GB2558958A_D0007
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Figure GB2558958A_D0010
Figure GB2558958A_D0011
Improvements In Or Relating To Solar Shading
The present invention relates to an exterior-solar-shading thermal-break bracket mounting device, and to an architectural louvre system using said bracket mounting device to mount a louvre bracket on a building upright, such as a mullion, to provide a thermal break when attaching exterior solar shading for a building.
Solar shading for a building can be achieved by affixing louvres to the exterior of the building. The louvres are typically point or linearly supported, and may be adjustable around a single axis in order to allow control of the extent of shading as the sun’s apparent position in the sky changes across the day.
In a common setup, brackets are attached to mullions, located on the exterior side of a pane of glass forming part of a building faqade, via an attachment block or element. Typically, the mullion is a curtain wall mullion of a glass curtain wall. The louvres can then be mounted on the exteriorly projecting brackets.
In modem installations significant force is applied to the mounting device, especially under high wind or other adverse weather conditions. Failure of the mounting device may lead to movement or dislocation of the bracket and the louvres. While it is important to maximize the strength of the bracket, attachment elements are currently typically produced from aluminium alloy, to allow light-weight construction. It would therefore be desirable to produce an attachment element out of a light-weight material with superior strength properties.
However, it is known that heat exchange from the interior to the exterior of the building, and vice-versa in more temperate climates, may occur via the attachment element. If the attachment element is manufactured from a heat-conducting metal, this will likely be a significant or noticeable contribution to energy loss, either via increased heating or air conditioning requirements. It is known to include one or more removable thermal-break elements between the bracket and the mullion, to prevent heat exchange, but this may be inconvenient due to imperfect insulation, a higher cost of installation, and a greater need for maintenance.
The present invention seeks to provide a solution to the problems outlined above with the prior art.
According to a first aspect of the invention, there is provided an exterior-solar-shading thermal-break bracket mounting device comprising: a fibre-reinforced plastics mounting body forming a thermal break which prevents or reduces thermal conduction; a plurality of mullion-engagement apertures extending through the mounting body by which the fibre-reinforced plastics mounting body is engageable with a curtain-walling mullion; a plurality of bracket-plate apertures extending through the fibre-reinforced plastics mounting body transversely of the mullion-engagement apertures and spaced therefrom to maintain the said thermal break; a pair of opposing bracket-engagement plates attached or attachable to the fibre-reinforced plastics mounting body via the bracket-plate apertures; and at least one bracket-engagement aperture in each bracket-engagement plate for engaging an exterior-solar-shading bracket or a mounting member therefor.
The provision of a fibre-reinforced plastics mounting body is advantageous as the body of the thermal-break bracket mounting device can itself act as a thermal break. This is due to the better thermal insulation properties of fibre-reinforced plastics as opposed to metal; conventional exterior-solar-shading bracket mounting devices may typically be formed from aluminium alloy or steel. The choice of fibre-reinforced plastics as compared to other thermal insulators is due to its extremely high rigidity, strength and work of fracture. By spacing the plurality of bracket-plate apertures from the mullion engagement apertures a thermal break is maintained as it prevents any fasteners, which may be in use used for attachment purposes, to provide an energy transfer path through the device. These factors combine to prevent the transfer of thermal or acoustic energy from the in use mullion to the external environment of the mullion’s associated building or vice versa.
Beneficially, the fibre-reinforced plastics mounting body may be injection moulded. Injection moulding is the most economical method of manufacturing bulk fibrereinforced plastics components. Injection moulding is additionally advantageous in the case of a fibre-reinforced plastic, as it increases the likelihood that the tensile strength of the device is isotropic.
Preferably, the fibre-reinforced plastics mounting body may be formed from carbon fibrereinforced polymer of a carbon fill volume fraction of 5% to 80%. Increasing the carbon fill volume fraction of a fibre-reinforced plastic increases the strength whilst decreasing the carbon fill volume fraction increases the work of fracture. Carbon fill volume fraction by volume between 5% to 80% provides a suitable compromise between these two factors.
Most preferably, the fibre-reinforced plastics mounting body may be formed from carbon fibre-reinforced polymer of a carbon fill volume fraction of 10% to 40%. Increasing the carbon fill volume fraction of a fibre-reinforced plastic increases the strength whilst decreasing the carbon fill volume fraction increases the work of fracture. Carbon fill volume fraction by volume between 10% to 40% is a suitable compromise between these two factors. Carbon fill volume fraction between this range optimizes the heat insulation properties of the fibre-reinforced plastic while retaining adequate strength performance.
Preferably, at least two mullion-engagement apertures extend through said fibrereinforced plastics mounting body. Providing at least two mullion-engagement apertures in use prevents or limits rotation of the mounting body with respect to the mullion. Preventing or limiting rotation of the mounting body reduces the amount of stress acting on any in use fasteners of the mullion and mounting body and thereby prevents or limits fracture of the fasteners.
Advantageously, two bracket-plate apertures may extend through said fibre-reinforced plastics mounting body. At least two bracket-plate apertures in use prevents or limits rotation of the mounting body with the bracket-engagement plates. As above, preventing or limiting rotation of the mounting body reduces the amount of stress acting on any in use fasteners of the bracket-engagement plates and mounting body and thereby prevents or limits fracture
Beneficially, the exterior-solar-shading thermal-break bracket mounting device may further comprise mullion-fasteners receivable through the mullion-engagement apertures. Such mullion-fasteners allows for the exterior-solar-shading thermal-break bracket mounting device to be securely attached to the mullion, as compared to alternative methods of attachment such as hooking elements or adhesives.
In a preferable embodiment, the exterior-solar-shading thermal-break bracket mounting device may further comprise bracket-plate-fasteners receivable through the bracket-plate apertures and at least one bracket engagement apertures. In this case, the bracket-platefasteners enables the exterior-solar-shading thermal-break bracket mounting device to be securely attached to the bracket-engagement plates, as compared to alternative methods of attachment such as hooking elements or adhesives.
Preferably, the fibre-reinforced plastics mounting body may have a mullion-engagement portion and a plate-attachment portion. The two separate portions of the mounting body allows there to be a shoulder defined at an interface between them. Additionally, the provision of two separate portions of diverse profile may facilitate the removal of the mounting body from an injection moulding die during production.
Beneficially, a shoulder may be defined at an interface between the mullion engagement portion and the plate-attachment portion. A shoulder portion provides the advantage that the bracket-plates are allowed to be seated on the mullion-engagement portion, preventing or limiting the bracket-plates from tilting from their desired position in use.
In a preferable embodiment, the pair of opposing bracket-engagement plates may be attached to the fibre-reinforced plastics mounting body on opposing sides of the plateattachment portion. The opposing bracket-engagement plates being situated on opposite sides of the plate-attachment portion allows for an external bracket to be receivable between the bracket-engagement plates. This results in an improved attachment of the bracket to the bracket-engagement plates compared to when e the bracket-engagement plates are not on opposite sides of the plate-attachment portion.
Optionally, the pair of opposing bracket-engagement plates may be seated on the face of the shoulder. Seating the bracket-engagement plates on the shoulder provides the advantage that the bracket-plates are prevented or limited from tilting from their desired position in use.
Advantageously, the exterior-solar-shading thermal-break bracket mounting device may further comprise a thermal and/or acoustic insulative sheath, having a closed end and an open end separated by a sheath wall section, the closed end abutting the plate-attachment portion and the sheath wall section interposed between the bracket-engagement plates.
The closed end of the sheath element abutting the plate-attachment portion allows for the mullion fasteners to be covered with respect to the exterior-solar-shading bracket or a mounting member therefor, preventing or limiting conduction of heat therethrough. The sheath wall section being interposed between the bracket-engagement plates prevents or limits conduction of heat between the bracket-engagement plates and an adjoining in use bracket.
Alternatively, the insulative sheath may form a further thermal break. A further thermal 10 break further reduces the heat transfer from the in use mullion to the external environment of the mullion’s associated building or vice versa.
Additionally, at least one sheath aperture may extend through the sheath wall section and is collinear with the at least one bracket-engagement aperture in each bracket-engagement plate. The presence of a sheath aperture allows the insulative sheath to be attached in place by an in use fastener and thereby prevents or limits loss of heat insulation by the displacement of the sheath.
Advantageously, the exterior-solar-shading thermal-break bracket mounting device may further comprise a pair of thermal and/or acoustic insulative strips interposed between the bracket-engagement plates. Insulative strips provide a similar advantage to the insulative sheath however are furtherly advantageous in that they typically have a lower cost and so reduce the per-unit cost of the mounting device.
Beneficially, at least one insulative strip aperture may extend through each insulative strip and is collinear with the at least one bracket-engagement aperture in each bracketengagement plate. The presence of an insulative strip aperture allows the insulative strip to be attached in place by an in use fastener and prevents or limits loss of heat insulation by the displacement of the sheath.
In a preferable embodiment, at least one insulative plug occludes each mullionengagement aperture. In this case, when the insulative strips are used as opposed to the insulative sheath, the plugs prevent or reduce the conduction of heat energy from the mullion-fasteners to the in use exterior-solar-shading bracket or a mounting member therefor is prevented or limited.
According to a second aspect of the present invention there is provided a modular exterior solar shading mounting device for the attachment to a mullion, comprising a plurality of exterior-solar-shading thermal-break bracket mounting devices in accordance with the first aspect of the present invention for the attachment to a mullion, the plurality of exterior-solar-shading thermal-break bracket mounting devices positioned in longitudinal alignment to receive brackets of varying length in a dimension perpendicular to a mullion.
A modular exterior solar shading mounting device for the attachment to a mullion allows 10 for customization of installation for different sizes of bracket and mullion, particularly in the case where the mullion is a curtain walling mullion and the glazing is an exterior curtain wall of a building. Furthermore, the ability to freely choose the number of mounting bodies is beneficial as it allows for greater control over the degree of structural support provided by the mounting bodies while using only one design of mounting body.
This is particularly preferable due to the high cost of custom-manufacturing the mounting bodies and testing each design for relevant strength parameters, especially if the mounting body is manufactured from fibre-reinforced plastics.
According to a third aspect of the present invention there is provided a dual exterior solar shading mounting device for the attachment to a mullion, comprising a substantially V20 shaped interface bracket, a pair of exterior-solar-shading thermal-break bracket mounting devices in accordance with the first aspect of the present invention for the attachment to a mullion, the pair of exterior-solar-shading thermal-break bracket mounting devices attached to the substantially V-shaped interface bracket.
This configuration provides two points of support for the in use interface bracket to be mounted onto which prevents or limits rotation of the interface bracket with respect to the mullion and/or exterior-solar-shading thermal-break bracket mounting devices as compared to one point of support. This thereby reduces the chance of fracture of the device due to high loading stress caused by the rotation.
According to a fourth aspect of the present invention there is provided a multi planar exterior solar shading mounting assembly for the mounting to a mullion and a transom, comprising a longitudinal-arm element and a transverse-arm element; the longitudinal arm element having at least one longitudinal-arm slot; the transverse arm element having at least one transverse-arm slot; the transverse-arm slot and the longitudinal-arms lot being mutually receivable with one another when the longitudinal-arm element and the transverse arm element are attached transversally to each other; at least one exterior-solarshading thermal-break bracket mounting devices in accordance with the first aspect of the present invention fixed at or adjacent to each end of the longitudinal-arm element for attachment to a mullion; and at least one exterior-solar-shading thermal-break bracket mounting devices in accordance with the first aspect of the present invention fixed at or adjacent to each end of the transverse-arm element for attachment to a transom.
Such a configuration provides four points of support for the in use interface bracket to be mounted, which prevents or limits rotation of the interface bracket with respect to the mullion and/or exterior-solar-shading thermal-break bracket mounting devices as compared to fewer points of support. This thereby reduces the chance of fracture of the device due to high loading stress caused by the rotation.
According to a fifth aspect of the present invention there is provided an exterior-solarshading thermal-break bracket mounting device comprising: a fibre-reinforced plastics mounting body for forming a thermal break which prevents or reduces thermal conduction; of at least one mullion-engagement aperture extending through the fibrereinforced plastics mounting body by which the fibre-reinforced plastics mounting body is engageable with a building exterior mullion; at least one bracket-receiver aperture extending through the fibre-reinforced plastics mounting body transversely of the mullion-engagement aperture and spaced therefrom to maintain the said thermal break; a bracket receiver attached or attachable to the fibre-reinforced plastics mounting body via the at least one bracket-receiver aperture; and at least one bracket-engagement element at the bracket-engagement plate receiver for engaging an exterior-solar-shading bracket or a mounting member therefor.
Providing an exterior-solar-shading thermal-break bracket mounting device in accordance with the fifth aspect of the present invention is advantageous as per the first aspect of the invention described hereinbefore.
According to a sixth aspect of the present invention there is provided an exterior-solarshading thermal-break bracket mounting device comprising: a fibre-reinforced plastics mounting body forming to form a thermal break which prevents or reduces thermal conduction; a plurality of mullion-engagement apertures extending through the fibrereinforced plastics mounting body by which the fibre-reinforced plastics mounting body is engageable with a curtain-walling mullion; a bracket receiver integrally formed as onepiece with the fibre-reinforced plastics mounting body, the bracket receiver formed of fibre-reinforced plastics; at least one bracket-engagement aperture in the bracket receiver for engaging an exterior-solar-shading bracket or a mounting member therefor, the said at least one bracket-engagement aperture extending transversely to the mullionengagement apertures and spaced therefrom to maintain the said thermal break.
The provision of a fibre reinforced plastics mounting provides the advantage that the body of the thermal-break bracket mounting device can itself act as a thermal break. This is as fibre-reinforced plastics are typically more thermally insulating than metal; conventional exterior-solar-shading bracket mounting devices may typically be formed from aluminium alloy or steel. The choice of fibre-reinforced plastics as compared to other thermal insulators is due to its extremely high rigidity, strength and work of fracture. By spacing the at least one bracket-engagement apertures from the mullion engagement apertures a thermal break is maintained as it prevents any fasteners, which may in use used for attachment purposes, to provide an energy transfer path through the device. These factors combine to prevent the transfer of thermal or acoustic energy from the in use mullion to the external environment of the mullion’s associated building or vice versa.
Furthermore, the use of a bracket receiver integrally formed as one-piece with the fibrereinforced plastics mounting body provides the additional advantage that it reduces the number of attachment means required to be used during installation. This results in the thermal-break bracket mounting device being simpler to install than if it were not formed as a one-piece.
Beneficially, the fibre-reinforced plastics mounting body may be injection moulded. Injection moulding is the most economical method of manufacturing bulk fibrereinforced plastics components. Injection moulding is additionally advantageous in the case of a fibre-reinforced plastic, as it increases the likelihood that the tensile strength of the device is isotropic.
Preferably, the fibre-reinforced plastics mounting body may be formed from carbon fibrereinforced polymer of a carbon fill volume fraction of 5% to 80%. Increasing the carbon fill volume fraction of a fibre-reinforced plastic increases the strength whilst decreasing the carbon fill volume fraction increases the work of fracture. Carbon fill volume fraction by volume between 5% to 80% provides a suitable compromise between these two factors.
Most preferably, the fibre-reinforced plastics mounting body may be formed from carbon fibre-reinforced polymer of a carbon fill volume fraction of 10% to 40%. Increasing the carbon fill volume fraction of a fibre-reinforced plastic increases the strength whilst decreasing the carbon fill volume fraction increases the work of fracture. Carbon fill volume fraction by volume between 10% to 40% is a suitable compromise between these two factors. Carbon fill volume fraction between this range optimizes the heat insulation properties of the fibre-reinforced plastic while retaining adequate strength performance.
Preferably, at least two mullion-engagement apertures extend through said fibrereinforced plastics mounting body. Providing at least two mullion-engagement apertures in use prevents or limits rotation of the mounting body with respect to the mullion. Preventing or limiting rotation of the mounting body prevents or limits the amount of stress acting on any in use fasteners of the mullion and mounting body and thereby prevents or limits fracture of the fasteners from occurring.
Advantageously, at least two bracket-engagement apertures may extend through said bracket receiver. At least two bracket-engagement apertures in use prevents or limits rotation of the mounting body with the bracket-engagement plates. Preventing or limiting rotation of the mounting body prevents or limits the amount of stress acting at any in use fasteners of the bracket-engagement plates and mounting body and thereby prevents or limits fracture from occurring.
Beneficially, the exterior-solar-shading thermal-break bracket mounting device may further comprise mullion-fasteners receivable through the mullion-engagement apertures. The mullion-fasteners allow for the exterior-solar-shading thermal-break bracket mounting device to be securely attached to the mullion, as compared to alternative methods of attachment such as hooking elements or adhesives.
In a preferable embodiment the exterior-solar-shading thermal-break bracket mounting device may further comprise bracket-receiver fasteners receivable through at least one bracket engagement apertures. Such fasteners allows for the exterior-solar-shading thermal-break bracket mounting device to be securely attached to the exterior-solar10 shading bracket or a mounting member, as compared to alternative methods of attachment such as hooking elements or adhesives.
Preferably, the exterior-solar-shading thermal-break bracket mounting device may further comprise a thermal and/or acoustic insulative sheath, having a closed end and an open end separated by a sheath wall section, the closed end abutting a base of a bracket receiver and the sheath wall section interposed between the bracket receiver. The closed end of the sheath element abutting the base of a bracket receiver allows for the mullion-fasteners to be covered with respect to the exterior-solar-shading bracket or a mounting member therefor, preventing or limiting conduction of heat therethrough. The sheath wall section being interposed between the bracket receiver prevents or limits conduction of heat between the bracket receiver and an adjoining in use bracket.
Advantageously, the insulative sheath may form a further thermal break. An additional thermal break further reduces the heat transfer from the in use mullion to the external environment of the mullion’s associated building or vice versa.
Beneficially, at least one sheath aperture may extend through the sheath wall section and may be collinear with the at least one bracket-engagement aperture in each bracket receiver. The presence of a sheath aperture allows the insulative sheath to be attached in place by an in use fastener and thereby not be unintentionally removed from its position where it forms a further thermal break.
In a preferable embodiment, a pair of thermal and/or acoustic insulative strips are interposed between the bracket receiver. Insulative strips provide a similar advantage to the insulative sheath however are furtherly advantageous in that they typically have a lower cost and so reduce the per-unit cost of the mounting device.
Optionally, at least one insulative strip aperture extends through each insulative strip and is collinear with the at least one bracket-engagement aperture in each bracket receiver. The presence of an insulative strip aperture allows the insulative strip to be attached in place by an in use fastener and thereby not be unintentionally removed from its position where it forms a further thermal break.
According to a seventh aspect of the present invention there is provided an exterior-solarshading thermal-break bracket mounting device comprising: a fibre-reinforced plastics mounting body for forming a thermal break which prevents or reduces thermal conduction; at least one mullion-engagement aperture extending through the fibrereinforced plastics mounting body by which the fibre-reinforced plastics mounting body is engageable with a building exterior mullion; a bracket receiver integrally formed as one-piece with the fibre-reinforced plastics mounting body; at least one bracketengagement element at the bracket receiver for engaging an exterior-solar-shading bracket or a mounting member therefor, the said at least one bracket-engagement element being spaced from the mullion-engagement apertures to maintain the said thermal break.
Providing an exterior-solar-shading thermal-break bracket mounting device in accordance with the seventh aspect of the present invention is advantageous as per the sixth aspect of the invention described hereinbefore.
According to an eighth aspect of the present invention there is provided an exterior-solarshading thermal-break bracket mounting device comprising: a fibre-reinforced plastics mounting body for forming a thermal break which in use prevents or reduces thermal conduction; at least one mullion-engagement element at the fibre-reinforced plastics mounting body which at least in part enables the fibre-reinforced plastics mounting body to be engageable with a building exterior mullion; a bracket receiver on the fibrereinforced plastics mounting body; a bracket-engagement element at the bracket receiver for engaging an exterior-solar-shading bracket or a mounting member therefor, the bracket-engagement element being spaced from the mullion-engagement element to maintain the said thermal break.
The provision of a fibre reinforced plastics mounting body provides the advantage that the body of the thermal-break bracket mounting device can itself act as a thermal break.
This is as fibre-reinforced plastics are typically more thermally insulating than metal; conventional exterior-solar-shading bracket mounting devices may typically be formed from aluminium alloy or steel. The choice of fibre-reinforced plastics as compared to other thermal insulators is due to its extremely high rigidity, strength and work of fracture. By spacing the at least one bracket-engagement apertures from the mullion engagement apertures a thermal break is maintained as it prevents any fasteners, which may in use used for attachment purposes, to provide an energy transfer path through the device. These factors combine to prevent the transfer of thermal or acoustic energy from the in use mullion to the external environment of the mullion’s associated building or vice versa.
Beneficially, the fibre-reinforced plastics mounting body is injection moulded. Injection moulding is the most economical method of manufacturing bulk fibre-reinforced plastics components. Injection moulding is additionally advantageous in the case of a fibrereinforced plastic, as it increases the likelihood that the tensile strength of the device is isotropic.
Preferably, the fibre-reinforced plastics mounting body may be formed from carbon fibre20 reinforced polymer of a carbon fill volume fraction of 5% to 80%. Increasing the carbon fill volume fraction of a fibre-reinforced plastic increases the strength whilst decreasing the carbon fill volume fraction increases the work of fracture. Carbon fill volume fraction by volume between 5% to 80% provides a suitable compromise between these two factors.
Most preferably, the fibre-reinforced plastics mounting body may be formed from carbon fibre-reinforced polymer of a carbon fill volume fraction of 10% to 40%. Increasing the carbon fill volume fraction of a fibre-reinforced plastic increases the strength whilst decreasing the carbon fill volume fraction increases the work of fracture. Carbon fill volume fraction by volume between 10% to 40% is a suitable compromise between these two factors. Carbon fill volume fraction between this range optimizes the heat insulation properties of the fibre-reinforced plastic while retaining adequate strength performance.
Preferably, at least two mullion-engagement elements are at the fibre-reinforced plastics mounting body. Providing at least two mullion-engagement elements in use prevents rotation of the mounting body with respect to the mullion. Preventing rotation of the mounting body prevents or limits the amount of stress acting on any in use fasteners of the mullion and mounting body and thereby prevents or limits fracture of the fasteners from occurring.
Advantageously, at least two bracket-engagement elements may be at the bracket 10 receiver. Providing at least two bracket-engagement elements in use prevents rotation of the mounting body with respect to an exterior-solar-shading bracket or a mounting member therefor. Preventing rotation of the mounting body prevents or limits the amount of stress acting on any in use fasteners of the an exterior-solar-shading bracket or a mounting member therefor and mounting body and thereby prevents or limits fracture of the fasteners from occurring.
Beneficially, the mullion-engagement elements are mullion fasteners. The provision of mullion-fasteners allows for the exterior-solar-shading thermal-break bracket mounting device to be securely attached to the mullion, as compared to alternative methods of attachment such as hooking elements or adhesives.
In a preferable embodiment the bracket-engagement elements are bracket fasteners. These fasteners allow for the exterior-solar-shading thermal-break bracket mounting device to be securely attached to the exterior-solar-shading bracket or a mounting member therefor, as compared to alternative methods of attachment such as hooking elements or adhesives.
Advantageously, the exterior-solar-shading thermal-break bracket mounting device may further comprise a thermal and/or acoustic insulative sheath, having a closed end and an open end separated by a sheath wall section, the closed end abutting a base of the bracket receiver and the sheath wall section interposed between the bracket receiver. The closed end of the sheath element abutting the base of a bracket receiver allows for the mullion14 fasteners to be covered with respect to the exterior-solar-shading bracket or a mounting member therefor, preventing or limiting conduction of heat therethrough. The sheath wall section being interposed between the bracket receiver prevents or limits conduction of heat between the bracket receiver and an adjoining exterior-solar-shading bracket or a mounting member therefor.
Beneficially, the insulative sheath may form a further thermal break. As above, the additional break further reduces the heat transfer from the in use mullion to the external environment of the mullion’s associated building or vice versa.
In a preferable embodiment, the exterior-solar-shading thermal-break bracket mounting device may further comprise a pair of thermal and/or acoustic insulative strips interposed between the bracket receiver. Insulative strips provide a similar advantage to the insulative sheath, but are furtherly advantageous in that they typically have a lower cost and so reduce the per-unit cost of the mounting device.
According to a ninth aspect of the present invention there is provided a curtain walling mullion bracket assembly comprising : a curtain walling mullion; a fibre-reinforced plastics mounting body for forming a thermal break which in use prevents or reduces thermal conduction; at least one mullion-engagement element at the fibre-reinforced plastics mounting body which at least in part enables the fibre-reinforced plastics mounting body to be engageable with a building exterior mullion; a bracket receiver on the fibre-reinforced plastics mounting body; a bracket-engagement element at the bracket receiver for engaging an exterior-solar-shading bracket or a mounting member therefor, the bracket-engagement element being spaced from the mullion-engagement element to maintain the said thermal break; an exterior-solar-shading bracket; and an exterior solar shading device fixed to the exterior solar shading.
Providing a curtain walling mullion bracket assembly in accordance with the ninth aspect of the invention is advantageous due to the superior insulation properties of the fibrereinforced plastics mounting body, as described hereinbefore with respect to the previous aspects of the invention.
The invention will now be more particularly described by way of example only, with reference to the accompanying drawings, in which:
Figure 1 shows a perspective view of a first embodiment of an exterior-solarshading thermal-break bracket mounting device, in accordance with the first and fifth aspects of the invention;
Figure 2 shows a lateral cross-section of the exterior-solar-shading thermal-break bracket mounting device, as shown in Figure 1;
Figure 3 shows an exploded view of the engagement of a bracket with the first embodiment of a single exterior-solar-shading thermal-break bracket mounting device, in accordance with the first aspect of the invention;
Figure 4 shows an exploded view of the engagement of a bracket with a second embodiment of a single exterior-shading thermal-break bracket mounting device, in accordance with the first aspect of the invention;
Figure 5 shows a perspective view of a modular exterior solar shading interface 15 bracket with a plurality of the exterior solar-shading thermal-break bracket mounting devices, in accordance with the second aspect of the invention;
Figure 6 shows a perspective view of a modular exterior solar shading interface bracket with dual said solar-shading thermal-break bracket mounting devices, in accordance with the third aspect of the invention;
Figure 7 shows a perspective view of a multi-planar modular exterior solar shading interface bracket with multiple said solar-shading thermal-break bracket mounting devices, in accordance with the fourth aspect of the invention;
Figure 8 shows a perspective view of an exterior-solar-shading thermal-break bracket mounting device, in accordance with the sixth and seventh aspect of the invention;
and
Figure 9 shows a perspective view of a curtain walling mullion exterior solar shading device assembly, in accordance with the eighth aspect of the invention.
Referring firstly to Figures 1, 2 and 3, there is shown a first embodiment of an exteriorsolar-shading thermal-break bracket mounting device 10 comprising a mounting body 12 (also referred to hereafter as a mounting block 12), a plurality of mullion-engagement apertures 14 extending through said mounting body 12, a plurality of bracket-plate apertures 16 extending through said mounting body 12, a pair of opposing bracketengagement plates 18 attachable to the mounting body 12 via the bracket-plate apertures 16, and at least one bracket-engagement aperture 20 in each bracket-engagement plate
18.
The mounting body 12 is preferably provided as a unitarily formed block manufactured from fibre-reinforced plastics. The choice of polymer should optimize the heat insulation and strength properties of the fibre-reinforced plastics. Secondary considerations include fire retardance, acoustic and electrical insulation, density and minimized water absorption. Polyamides (PA) or polybutylene terephthalate (PBT) are hence preferable, and polyamide 6,6 is most preferable. Other examples of suitable plastics include epoxies, polybenzimidazole (PBI), polyoxymethylene (POM) and polypropylene (PP). If polybenzimidazole were to be used, it may be preferable to compound it with polyetheretherketone (PEEK) to improve processability.
The fibre-reinforced plastics may preferably be carbon fibre reinforced plastics, and most preferably carbon fibre reinforced polyamide 6,6, due to its extremely high strength and rigidity, and appropriate insulation properties. However, other fibre-reinforced materials, such as fibreglass, nickel or aramid reinforced plastics may be contemplated. It may be advantageous to incorporate additive fibres to give a hybridised fibre composite. For instance, it is well known that carbon/glass fibre composites typically have significantly higher failure strains than corresponding carbon fibre composites.
Alternatively, the mounting block 12 may be preferably manufactured from a ceramic material or a fibre-reinforced ceramic composite, in order to provide better fire retardance.
The volume fraction of carbon fibre fill in the fibre-reinforced plastics of the mounting body may appropriately be between 5% and 80%, preferably between 10% and 40%, and most beneficially at or around 30%. Higher volume fraction of carbon fibre maximizes strength but reduces heat insulation performance. In some applications, it may be preferable to provide a mounting body 12 with higher or lower volume fraction. If a hybrid-fibre-reinforced plastic is used, a relatively low carbon fibre fill volume fraction range of 10% to 30% may be preferable.
The mounting body 12 could also be manufactured out of a non-fibre reinforced plastic, to reduce cost. Suitable materials include high-strength polyamide (PA), polybenzimidazole (PBI), polyether imide (PEI), polycarbonate (PC) and polyurethane (PUR).
Preferably, the mounting body 12 may be manufactured by injection moulding. This is 10 economical, and also especially advantageous in the case of a fibre-reinforced plastic, as it ensures that the mounting body 12 has similar stress resistance in all directions.
Alternatively, it may be preferable to use compression moulding, which allows high-cycle production. Other methods, such as pultrusion, may also be considered, and the exact method of manufacture chosen will depend on the composition of the material as well as required strength performance and the shape of the mounting body 12. In any case, the mounting body 12 is preferably unitarily formed, although multiple piece manufacture may be contemplated.
The mounting body 12 may preferably comprise a mullion-engagement portion 22 and a plate-attachment portion 24. At least one of the mullion engagement apertures 14 extends through the mullion engagement portion 22, and at least one of the bracket-plate apertures 16 extends through the plate-attachment portion 24. The mullion engagement apertures 14 are adapted to receive a mullion-fastener 26 and the bracket-plate apertures 16 are adapted to receive a bracket plate fastener 28, for example via screw-threading. The mullion-fastener 26 and the bracket-plate fastener 28 may include screws, bolts, hooks and rivets.
In the present embodiment of the invention, both the bracket-plate apertures 16 and the mullion-engagement apertures 14 are provided as cylindrical bores which extend through the mounting body 12. However, it would also be possible to provide apertures of other shapes, such as oval or substantially square apertures.
The mullion-engagement apertures 14 may most preferably extend through the mullionengagement portion 22 and the plate-attachment portion 24, so that each mullionengagement aperture 14 extends through the two portions 22, 24. The mullionengagement apertures 14 may preferably have a step 30 within the mounting body 12 to facilitate the introduction of a mullion-fastener 26. The step 30 may be preferably positioned at the interface of the two portions 22, 24, or in the mullion-engagement portion 22. Alternatively, the step 30 could be positioned in the plate-attachment portion 24 to facilitate the introduction of particularly long mullion-fasteners 26.
Preferably, there are at least two mullion-engagement apertures 14, to prevent or reduce rotation of the attachment block 12 with respect to the mullion 32 in use. However, conceivably one could construct a mounting body in accordance with the invention with only one mullion-engagement aperture, if other means of attachment engageable with the mullion were provided on the face of the mullion-engagement portion. For instance, the mullion-engagement could bear integral plate attachment elements receivable into slots disposed on the mullion.
The bracket-plate apertures 16 may preferably be positioned laterally on the plateattachment portion 24, so that they are disposed transversely from the mullionengagement apertures 14. It is beneficial to have at least two bracket-plate apertures 16, to prevent or reduce rotation of the bracket-plate 18 with respect to the mounting body
12. Preferably, this allows a pair of two bracket-plates 18, each having two bracket-plate apertures 16, to be affixed on opposing sides of the plate-attachment portion 24.
The mullion-engagement portion 22 and plate-attachment portion 24 may have diverse profiles. It is advantageous for a shoulder 34 to be defined at an interface between the mullion-engagement portion 22 and the plate-attachment portion 24, as this allows the bracket-plates 18 to be seated on the mullion-engagement portion 22, preventing the bracket-plates 18 from tilting substantially from their desired position in use. Additionally, it may be preferable to provide the plate-attachment portion 24 with an at least partially curved profile, to allow for facile and/or automated removal of the mounting body 12 from the injection moulding die during manufacture.
Each bracket-engagement plate 18 or strap may preferably have at least one bracket plate aperture 16, and preferably at least two bracket engagement apertures 20, suitable for receiving fasteners similar to those described above, to preventing or reducing rotation of a bracket-engagement plate 18 with respect to a bracket 36. The bracket-engagement plates 18 may preferably be manufactured out of a corrosion-resistant structural or speciality steel, but other materials, such as cold-worked aluminium alloy, may also be appropriate.
There may also be provided an insulating sheath element 38, which preferably may include at least one sheath aperture 40, collinear to the bracket-engagement aperture 20 of the bracket-engagement plate 18, to allow attachment to the two bracket-engagement plates 18. Beneficially, the interdisposition of this sheath element 38 between a bracketengagement plate 18 and the bracket 36 results in a second thermal break, thus improving the insulation provided. The sheath element 38 may preferably be made of a flexible polymer. Polyisobutylene (PIB) rubber may be particularly appropriate. Alternatively, the sheath element 38 could be made of insulating plastics, such as nylon 6. Preferably, in use the sheath element 38 covers an opening of the mullion engagement apertures 14, preventing or reducing conduction of heat therethrough. Additionally or alternatively, further insulative plugs, not shown, may occlude each mullion-engagement aperture. The sheath element 38 most preferably also provides acoustic insulation.
In an second embodiment of the invention, as shown in Figure 4, instead of a single sheath element, a single insulating packer 142 or strip may preferably be provided on the external side of each bracket-plate. This is advantageous in that it reduces the per-unit cost of the mounting device 110. Other aspects of this embodiment are identical to those of that described above, so further detailed description has been omitted for the sake of brevity, and all elements are indicated by their reference numeral in Figures 1 to 3 plus one hundred for ease of reference.
Referring to Figure 5, there is shown a modular exterior solar shading mounting device for attachment to a mullion, comprising a plurality of exterior-solar-shading thermalbreak bracket mounting bodies 12 substantially as described above, attached in a longitudinal alignment to receive brackets 36 of varying length in a dimension, in use perpendicular to a mullion 32, by means of a pair of extended bracket-engagement plates 44.
Constructing a modular exterior solar shading mounting device is advantageous as it allows facile customization of installation for different sizes of bracket 36 and mullion 32, particularly in the case where the mullion is a curtain wall mullion and the glazing is an exterior curtain wall of a building. Furthermore, the ability to freely choose the number of mounting bodies 12 is beneficial as it allows for greater control over the degree of structural support provided by the mounting bodies 12 while using only one design of mounting body 12. This is particularly preferable due to the high cost of custommanufacturing the mounting bodies 12 and testing each design for relevant strength parameters, especially if the mounting body 12 is manufactured from fibre-reinforced plastics. However, in some cases, especially when extremely high loads are applied to the mounting bodies 12, it may be appropriate to manufacture a custom extended mounting body 12.
To achieve modular construction, a plurality of mounting bodies 12 is arranged in endto-end (longitudinal) alignment, and an extended bracket-engagement plate 44 with at least one bracket-engagement aperture 20 and one bracket-plate aperture 16 per mounting body is overlaid thereon. Each aperture 16, 20 may receive a bracket-plate-fastener 28, which may preferably be a bolt or screw-threaded fastener. In the latter case the apertures 16, 20 may preferably be screw-threaded to better receive the fastener. Most preferably, further bracket-engagement apertures and bracket-plate apertures per mounting body are provided to avoid inappropriate structural weakening in the case of failure of one or more fasteners in said apertures.
Another possible modular arrangement is depicted in Figure 6. In this case, the two mounting bodies 12, shown as in Figure 1, each have their own respective pair of bracketengagement plates 18, which are not connected. The two mounting device 12 are attached to one another by a substantially V-shaped bracket 46. V-shaped bracket 46 is attached to each bracket-engagement plate 18 by V-shaped-bracket-fasteners 48 which extend through a V-shaped-bracket-aperture 50 positioned collinear to a bracket-engagement aperture 20. The mounting devices 10 are identical to those shown in Figure 3, and therefore further detailed description has been omitted for the sake of brevity, and all elements previously described are indicated by their reference numeral in Figures 1 to 3 ease of reference.
Figure 7 depicts a cruciform modular exterior solar shading mounting device 52. This arrangement is particularly suitable for attachment to a curtain wall mullion 32 of the external curtain wall faqade of a building. Typically, such curtain wall mullions 32 may be provided as a cruciform unit located at the points of intersection of the vertices of the panes of the curtain wall, with the space between the mullions 32 on the line of intersection between the panes of glass occupied by extended struts, which may or may not be substantively load bearing.
In this case the mounting devices 10 engage with two mutually engageable bracket elements 54 to form a cruciform mounting device 52 suitable for attachment to the mullion 33. Each mutually engageable bracket element 54 has two arm portions 56 and a central connecting portion 58, disposed so that the two arm portions 56 extend transversely with respect to the central connecting portion 58. Preferably, a slot 60 is disposed on each central connecting portion 58 to allow a locking engagement of the two bracket elements 54. The bracket elements 54 may have similar profile; alternatively, it may be preferable for the bracket elements 54 to be provided with differing profile, to facilitate the mounting of the louvre on the bracket 36. Although the bracket 36 could conceivably be formed solely of the two bracket elements 54, it would be preferable for a further louvre support portion of the bracket to be attached via a plurality of louvre support portion attachment apertures on the central connecting portion of one or more of the bracket elements 54.
While the depicted cruciform mounting device 52 would be appropriate in the case of a rectilinear curtain wall fayade, in the construction of a curvilinear curtain wall fayade, or a mixed curtain wall facade with substantially curvilinear portions, it may be preferable to provide a cruciform mounting device with bracket element arms of differing lengths, or where the bracket element arms are asymmetrically disposed, to provide better support. Additionally, it may be preferable to construct the cruciform mounting device whereby one or more arm each bears two or more mounting devices, to allow the mounting device to better carry an asymmetric load. Most preferably, one, two or four mounting devices may be provided per arm.
Providing a cruciform mounting device 52 is preferable as there are four distributed points of support, reducing the likelihood of failure of the louvre mounted thereon due to damage to the louvre, bracket and/or mullion 32, for instance in adverse weather conditions. In particular, the cruciform mounting device 52 will provide greater lateral stability relative to a linear modular mounting device. The cruciform mounting device 52, especially when the mounting bodies 12 are manufactured of fibre-reinforced plastics, will also be advantageous relative to aluminium alloy transom supports, as typically used, due to better strain resistance, and hence may reduce the incidence of fatigue-related failure.
The mounting devices 10 are identical to those shown in Figure 3, and therefore further detailed description has been omitted for the sake of brevity, and all elements previously described are indicated by their reference numeral in Figures 1 to 3 ease of reference.
Referring now to Figure 8, there is shown an embodiment of a mounting device for an exterior-solar-shading thermal-break bracket mounting device 210 which comprises a mounting body 212, a bracket receiver 262 integrally formed as one-piece with the mounting body 212, a plurality of mullion-engagement apertures 214, a plurality of bracket-engagement apertures 216 extending through said mounting body 212. The mounting device 210 may most preferably have a mullion-engagement portion 220 and a bracket-engaging portion 222. For features similar to those of the first embodiment of the first aspect of the invention, further detailed description has been omitted for the sake of brevity, and all elements previously described are indicated by their reference numeral in Figures 1 to 3 plus two hundred for ease of reference.
The bracket receiver 262 is preferably provided as a medial slot or depression in the bracket-engaging portion 222 of the mounting body. The bracket-engagement apertures 216 may intersect the bracket receiver 262, such that in installation a bracket section, having one or more apertures collinear with the bracket-engagement apertures 216, may be inserted into the bracket receiver 262 and fixed therein by the insertion of bracketreceiver fastenings, not shown, through the bracket-engagement apertures 216 and said apertures of the bracket section. Preferably, the mullion engagement apertures 214 may also intersect the bracket receiver 262 and/or the bracket-engagement apertures 216, but the mullion-engagement apertures could also be restricted to the mullion-engagement portion 220.
Replacing the bracket plates of the first embodiment of a mounting body with a bracket receiver 262 unitarily formed therewith is advantageous in several aspects. In the first instance, the unitarily formed mounting device 210 may economically have production costs similar to that of the mounting body of the first embodiment of the mounting device. Furthermore, as the unitarily formed mounting device 210 lacks the additional conducting volume of the strap device, more efficient thermal insulation will be provided.
It is advantageous for a shoulder 234 to be defined at an interface between the mullionengagement portion 220 and the bracket-engagement portion 222, to allow for facile and/or automated removal of the mounting device from an injection moulding die during manufacture.
Referring to Figure 9, there is shown a curtain walling mullion in combination with an exterior solar shading device mounted thereon, the combination including the curtain walling mullion 32, the mounting body 12 as shown in Figure 1, mullion-engagement element 22 at the mounting body 12 which is engageable with a building exterior mullion 32, bracket receivers 18 attached to the mounting body 12, and bracket-engagement element 28 at the bracket receivers 18 engaging an exterior-solar-shading bracket 36. For features identical to those shown in Figures 1 to 3, further detailed description has been omitted for the sake of brevity, and all elements thus previously described are indicated by their reference numeral in Figures 1 to 3.
Typically, the curtain walling mullion 32 may be manufactured by extrusion, out of aluminium alloy or alternatively steel, and may include an internal reinforcement spine 64, to improve its load bearing properties, as well as a glazing bar 66, preferably integrally formed, to facilitate attachment of the glazing.
The glazing bar 66 may preferably include two attachment sections 68, adapted to engage with one or more interior seals 70, which fit to a glazing unit. The seals 70 may advantageously be manufactured out of ethylene propylene diene monomer rubber (EPDM), for excellent weather resistance, but other synthetic polymers may be also appropriate. In any case, the presence of the seals 70 improves the heat insulation provided by the glazing unit, and they may preferably be removable from the glazing bar 66 to allow modular construction of the unit to custom specifications.
The glazing bar 66 preferably also includes a central portion 72 positioned between the two attachment sections 68, and extending towards the space between two adjacent glazing units. The central portion 72 may advantageously comprise at least one central portion aperture 74 matching the mullion-engagement aperture 14 of the mounting block 12, to allow for attachment to the mounting block 12 by the introduction of a fastener through said apertures.
The mounting block 12 also is attached to the bracket-engagement plates 18 via a bracket plate fastener 28 inserted through the bracket-plate apertures 16 of the mounting block 12 and bracket-engagement plates 18. The bracket-engagement plates 18 then may be affixed to a bracket interface element 76 of the bracket 36 by bracket plate fasteners 28 introduced through the bracket-engagement apertures 20 of the plates 18 and the bracket interface element 76, in such a way that the bracket interface element 76 abuts the mounting block
10. However, most preferably, there is an air gap disposed between the bracket interface element 76 and the mounting block 12, to provide for additional insulation. There is preferably no metal-to-metal contact between the interface element 76 of the bracket 36 and the bracket plates 18 due to an insulating element 38 interposed therebetween. As the mounting block 12 is manufactured out of an insulating material, there is thus provided heat insulation across all of the main potential conduction paths.
The bracket 36 preferably comprises two exterior seals 78, which may be manufactured out of ethylene propylene diene monomer rubber (EPDM) or another synthetic polymer. For example, for installations in locations where outside temperatures are frequently extremely low, such as the Arctic, it may be more appropriate to use a silicone based rubber which has a lower minimum service temperature for the exterior seals 70. These seals 70 may also preferably be removable from the bracket 36 to allow modular construction of the unit to custom specifications.
Furthermore, the bracket 36 preferably comprises a further extension portion 80, which may preferably be fastened to the bracket interface element 76 by a first bolt 82 extending through a large aperture disposed on the distal end of the bracket interface element 76, and a corresponding aperture on the proximal end of the extension portion 80. A louvre supporting bracket element 84 may then be attached via a second bolt 86 extending through a large aperture disposed on the distal end of the extension portion, and a corresponding aperture on the proximal end of the louvre supporting bracket element 84.
It is therefore possible to provide an exterior-solar-shading thermal-break bracket mounting device for forming a thermal break which in use prevents or reduces thermal conduction across a building wall mullion and glazing assembly, including a preferably fibre-reinforced plastics mounting body, at least one mullion-engagement element at the preferably fibre-reinforced plastics mounting body which at least in part enables the preferably fibre-reinforced plastics mounting body to be engagable with a building exterior mullion, a bracket receiver on the fibre-reinforced plastics mounting body, and a bracket-engagement element at the bracket receiver for engaging an exterior-solarshading bracket or a mounting member therefor. This allows the realisation of high quality insulation at low cost, while retaining a similar strength at the mounting body to traditional metal-based connections.
Furthermore, it is possible to provide such an exterior-solar-shading thermal-break bracket mounting device in a manner that allows the facile construction of modular bracket mounting devices comprising multiple such exterior-solar-shading thermal-break bracket mounting devices. This advantageously allows customized installation to projectspecific criteria.
The words ‘comprises/comprising’ and the words ‘having/including’ when used herein with reference to the present invention are used to specify the presence of stated features, integers, steps or components, but do not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.
It is appreciated that certain features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features of the invention which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable sub-combination.
The embodiments described above are provided by way of examples only, and various other modifications will be apparent to persons skilled in the field without departing from the scope of the invention as defined herein.

Claims (48)

Claims
1. An exterior-solar-shading thermal-break bracket mounting device comprising:
a fibre-reinforced plastics mounting body to form a thermal break which prevents or reduces thermal conduction;
a plurality of mullion-engagement apertures extending through the mounting body by which the fibre-reinforced plastics mounting body is engagable with a curtain-walling mullion;
a plurality of bracket-plate apertures extending through the fibrereinforced plastics mounting body transversely of the mullion-engagement apertures and spaced therefrom to maintain the said thermal break;
a pair of opposing bracket-engagement plates attached or attachable to the fibre-reinforced plastics mounting body via the bracket-plate apertures; and at least one bracket-engagement aperture in each bracket-engagement plate for engaging an exterior-solar-shading bracket or a mounting member therefor.
2. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 1, wherein the fibre-reinforced plastics mounting body injection moulded.
3. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 1 or claim 2, wherein the fibre-reinforced plastics mounting body is formed from carbon fibre-reinforced polymer of a carbon fill volume fraction of 5% to 80%.
4. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 3, wherein the fibre-reinforced plastics mounting body is formed from carbon fibre-reinforced polymer of a carbon fill volume fraction of 10% to 40%.
5. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of the preceding claims, further comprising mullion-fasteners receivable through the mullion-engagement apertures.
6. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of the preceding claims, further comprising bracket-plate-fasteners receivable through the bracket-plate apertures and at least one bracket engagement apertures.
7. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of the preceding claims, wherein at least two mullion-engagement apertures extend through said fibre-reinforced plastics mounting body.
8. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of the preceding claims, wherein two bracket-plate apertures extend through said fibre-reinforced plastics mounting body.
9. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of the preceding claims, wherein the fibre-reinforced plastics mounting body has a mullion-engagement portion and a plate-attachment portion.
10. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 9, wherein a shoulder is defined at an interface between the mullion engagement portion and the plate-attachment portion.
11. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 9 or claim 10, wherein the pair of opposing bracket-engagement plates is attached to the fibre-reinforced plastics mounting body on opposing sides of the plate-attachment portion.
12. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 10 or claim 11, wherein the pair of opposing bracket-engagement plates are seated on the face of the shoulder.
13. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of claims 9 to 12, further comprising a thermal and/or acoustic insulative sheath, having a closed end and an open end separated by a sheath wall section, the closed end abutting the plate-attachment portion and the sheath wall section interposed between the bracket-engagement plates.
14. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 13, wherein the insulative sheath forms a further thermal break.
15. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 13 or claim 14, wherein at least one sheath aperture extends through the sheath wall section and is collinear with the at least one bracket-engagement aperture in each bracket-engagement plate.
16. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of claims 1 to 12, further comprising a pair of thermal and/or acoustic insulative strips interposed between the bracket-engagement plates.
17. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 16, wherein at least one insulative strip aperture extends through each insulative strip and is collinear with the at least one bracket-engagement aperture in each bracket-engagement plate.
18. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 16 or claim 17, wherein at least one insulative plug occludes each mullionengagement aperture.
19. A modular exterior solar shading mounting device for the attachment to a mullion, comprising; a plurality of exterior-solar-shading thermal-break bracket mounting devices as claimed in any of the preceding claims for the attachment to a mullion, the plurality of exterior-solar-shading thermal-break bracket mounting devices attached in a longitudinal alignment to receive brackets of varying length in a dimension perpendicular to a mullion.
20. A dual exterior solar shading mounting device for the attachment to a mullion, comprising; a substantially V-shaped interface bracket, a pair of exterior-solarshading thermal-break bracket mounting devices as claimed in any of claims 1 to
18 for the attachment to a mullion, the pair of exterior-solar-shading thermalbreak bracket mounting devices attached to the substantially V-shaped interface bracket.
21. A multi planar exterior solar shading mounting assembly for the mounting to a mullion and a transom, comprising;
a longitudinal-arm element and a transverse-arm element; the longitudinal arm element having at least one longitudinal-arm-slot; the transverse arm element having at least one transverse-arm-slot; the transverse-arm-slot and the longitudinal-arm-slot being mutually receivable with one another when the longitudinal-arm element and the transverse arm-element are attached transversally to each other;
at least one exterior-solar-shading thermal-break bracket mounting devices as claimed in any one of claims 1 to 18 fixed at or adjacent to each end of the longitudinal-arm element for attachment to a mullion; and at least one exterior-solar-shading thermal-break bracket mounting devices as claimed in any one of claims 1 to 18 fixed at or adjacent to each end of the transverse-arm element for attachment to a transom.
22. An exterior-solar-shading thermal-break bracket mounting device comprising:
a fibre-reinforced plastics mounting body for forming a thermal break which prevents or reduces thermal conduction;
of at least one mullion-engagement aperture extending through the fibrereinforced plastics mounting body by which the fibre-reinforced plastics mounting body is engagable with a building exterior mullion;
at least one bracket-receiver aperture extending through the fibrereinforced plastics mounting body transversely of the mullion-engagement aperture and spaced therefrom to maintain the said thermal break;
a bracket receiver attached or attachable to the fibre-reinforced plastics mounting body via the at least one bracket-receiver aperture; and at least one bracket-engagement element at the bracket-engagement plate receiver for engaging an exterior-solar-shading bracket or a mounting member therefor.
23. An exterior-solar-shading thermal-break bracket mounting device comprising:
a fibre-reinforced plastics mounting body to form a thermal break which prevents or reduces thermal conduction;
a plurality of mullion-engagement apertures extending through the fibrereinforced plastics mounting body by which the fibre-reinforced plastics mounting body is engagable with a curtain-walling mullion;
a bracket receiver integrally formed as one-piece with the fibre-reinforced plastics mounting body, the bracket receiver formed of fibre-reinforced plastics;
at least one bracket-engagement aperture in the bracket receiver for engaging an exterior-solar-shading bracket or a mounting member therefor, the said at least one bracket-engagement aperture extending transversely to the mullion-engagement apertures and spaced therefrom to maintain the said thermal break.
24. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 23, wherein the fibre-reinforced plastics mounting body is injection moulded.
25. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 23 or claim 24, wherein the fibre-reinforced plastics mounting body is formed from carbon fibre-reinforced polymer of a carbon fill volume fraction of 5% to 80%.
26. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 25, wherein the fibre-reinforced plastics mounting body is formed from a carbon fibre-reinforced polymer of a carbon fill volume fraction of 10% to 40%.
27. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of claims 23 to 26, wherein at least two mullion-engagement apertures extend through said fibre-reinforced plastics mounting body.
28. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of claims 23 to 27, wherein at least two bracket-engagement apertures extend through said bracket receiver.
29. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of claims 23 to 28, further comprising mullion-fasteners receivable through the mullion-engagement apertures.
30. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of claims 23 to 29, further comprising bracket-receiver-fasteners receivable through the and at least one bracket engagement apertures.
31. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of claims 23 to 30, further comprising athermal and/or acoustic insulative sheath, having a closed end and an open end separated by a sheath wall section, the closed end abutting a base of a bracket receiver and the sheath wall section interposed between the bracket receiver.
32. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 31, wherein the insulative sheath forms a further thermal break.
33. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 31 or claim 32, wherein at least one sheath aperture extends through the sheath wall section and is collinear with the at least one bracket-engagement aperture in each bracket receiver.
34. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of claims 24 to 30, further comprising a pair of thermal and/or acoustic insulative strips are interposed between the bracket receiver.
35. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 34, wherein at least one insulative strip aperture extends through each insulative strip and is collinear with the at least one bracket-engagement aperture in each bracket receiver.
36. An exterior-solar-shading thermal-break bracket mounting device comprising:
a fibre-reinforced plastics mounting body for forming a thermal break which prevents or reduces thermal conduction;
at least one mullion-engagement aperture extending through the fibrereinforced plastics mounting body by which the fibre-reinforced plastics mounting body is engagable with a building exterior mullion;
a bracket receiver integrally formed as one-piece with the fibre-reinforced plastics mounting body;
at least one bracket-engagement element at the bracket receiver for engaging an exterior-solar-shading bracket or a mounting member therefor, the said at least one bracket-engagement element being spaced from the mullionengagement apertures to maintain the said thermal break.
37. An exterior-solar-shading thermal-break bracket mounting device comprising:
a fibre-reinforced plastics mounting body for forming a thermal break which in use prevents or reduces thermal conduction;
at least one mullion-engagement element at the fibre-reinforced plastics mounting body which at least in part enables the fibre-reinforced plastics mounting body to be engagable with a building exterior mullion;
a bracket receiver on the fibre-reinforced plastics mounting body; a bracket-engagement element at the bracket receiver for engaging an exterior-solar-shading bracket or a mounting member therefor, the bracketengagement element being spaced from the mullion-engagement element to maintain the said thermal break.
38. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 37, wherein the fibre-reinforced plastics mounting body is injection moulded.
39. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 37 or claim 38, wherein the fibre-reinforced plastics mounting body is formed from carbon fibre-reinforced polymer of a carbon fill volume fraction of 5% to 80%.
40. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 39, wherein the fibre-reinforced plastics mounting body is formed from carbon fibre-reinforced polymer of a carbon fill volume fraction of 10% to 40%.
41. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of claims 37 to 40, wherein at least two mullion-engagement elements are at the fibre-reinforced plastics mounting body.
42. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of claims 37 to 41, wherein at least two bracket-engagement elements are at the bracket receiver.
43. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of claim 37 to 41, wherein the mullion-engagement elements are mullion fasteners.
44. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of claims 37 to 40, wherein the bracket-engagement elements are bracket fasteners.
45. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of claims 37 to 44, further comprising a thermal and/or acoustic insulative sheath, having a closed end and an open end separated by a sheath wall section, the closed end abutting a base of the bracket receiver and the sheath wall section interposed between the bracket receiver.
46. An exterior-solar-shading thermal-break bracket mounting device as claimed in claim 45, wherein the insulative sheath forms a further thermal break.
47. An exterior-solar-shading thermal-break bracket mounting device as claimed in any one of claims 37 to 44, further comprising a pair of thermal and/or acoustic insulative strips interposed between the bracket receiver.
48. A curtain walling mullion bracket assembly comprising:
a curtain walling mullion;
a fibre-reinforced plastics mounting body for forming a thermal break which in use prevents or reduces thermal conduction;
at least one mullion-engagement element at the fibre-reinforced plastics mounting body which at least in part enables the fibre-reinforced plastics mounting body to be engagable with a building exterior mullion;
a bracket receiver on the fibre-reinforced plastics mounting body; a bracket-engagement element at the bracket receiver for engaging an exterior-solar-shading bracket or a mounting member therefor, the bracketengagement element being spaced from the mullion-engagement element to maintain the said thermal break;
an exterior-solar-shading bracket; and an exterior solar shading device fixed to the exterior solar shading bracket.
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Intellectual
Property
Office
Application No: Claims searched:
GB1701210.5A 2017-01-24 2017-01-24 Improvements in or relating to solar shading Pending GB2558958A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1701210.5A GB2558958A (en) 2017-01-24 2017-01-24 Improvements in or relating to solar shading

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB1701210.5A GB2558958A (en) 2017-01-24 2017-01-24 Improvements in or relating to solar shading
GBGB1712793.7A GB201712793D0 (en) 2017-01-24 2017-08-09 Improvements in or relating to solar shading
GB1712957.8A GB2558974A (en) 2017-01-24 2017-08-11 Improvements in or relating to solar shading
PCT/GB2018/050199 WO2018138493A1 (en) 2017-01-24 2018-01-24 Improvements in or relating to solar shading
EP18707125.3A EP3574157A1 (en) 2017-01-24 2018-01-24 Improvements in or relating to solar shading

Publications (2)

Publication Number Publication Date
GB201701210D0 GB201701210D0 (en) 2017-03-08
GB2558958A true GB2558958A (en) 2018-07-25

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GB1701210.5A Pending GB2558958A (en) 2017-01-24 2017-01-24 Improvements in or relating to solar shading
GBGB1712793.7A Ceased GB201712793D0 (en) 2017-01-24 2017-08-09 Improvements in or relating to solar shading
GB1712957.8A Pending GB2558974A (en) 2017-01-24 2017-08-11 Improvements in or relating to solar shading

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GBGB1712793.7A Ceased GB201712793D0 (en) 2017-01-24 2017-08-09 Improvements in or relating to solar shading
GB1712957.8A Pending GB2558974A (en) 2017-01-24 2017-08-11 Improvements in or relating to solar shading

Country Status (3)

Country Link
EP (1) EP3574157A1 (en)
GB (3) GB2558958A (en)
WO (1) WO2018138493A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2444257A (en) * 2006-11-29 2008-06-04 Levolux At Ltd An adapter for attaching a solar shading bracket to a curtain walling mullion
GB2483229A (en) * 2010-08-31 2012-03-07 Levolux At Ltd Curtain wall bracket attachment by adhesive

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7818931B2 (en) * 2004-06-01 2010-10-26 Oldcastle Glass Engineered Products, Inc. Curtain wall external support system
EP2037073A1 (en) * 2007-08-01 2009-03-18 Suncover S.p.A. Frame for curtains for external sides of continuosu facades of buildings
CN104878886B (en) * 2015-05-28 2017-04-26 广州江河幕墙系统工程有限公司 Outer sunshade device of point-supported-type glass curtain wall and installation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2444257A (en) * 2006-11-29 2008-06-04 Levolux At Ltd An adapter for attaching a solar shading bracket to a curtain walling mullion
GB2483229A (en) * 2010-08-31 2012-03-07 Levolux At Ltd Curtain wall bracket attachment by adhesive

Also Published As

Publication number Publication date
GB201712793D0 (en) 2017-09-20
EP3574157A1 (en) 2019-12-04
GB201701210D0 (en) 2017-03-08
GB2558974A (en) 2018-07-25
WO2018138493A1 (en) 2018-08-02
GB201712957D0 (en) 2017-09-27

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